Williamstown, NY Weather & Growing Conditions
This Afternoon
64°F
Mostly Sunny
Mostly sunny, with a high near 64. Northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Mostly Sunny | 2 mph NW | 0% |
| Tonight | 43°F | Mostly Cloudy | 1 to 8 mph SE | 3% |
| Sunday | 56°F | Rain | 6 to 9 mph SE | 100% |
| Sunday Night | 42°F | Rain then Chance Rain Showers | 3 to 9 mph NE | 87% |
| Monday | 62°F | Partly Sunny | 9 mph N | 0% |
| Monday Night | 39°F | Mostly Cloudy | 2 to 7 mph NE | 1% |
| Tuesday | 61°F | Partly Sunny | 2 to 6 mph NE | 1% |
| Tuesday Night | 39°F | Mostly Cloudy | 6 mph E | 1% |
| Wednesday | 62°F | Partly Sunny | 6 to 9 mph E | 3% |
| Wednesday Night | 39°F | Mostly Cloudy then Slight Chance Rain Showers | 9 mph E | 17% |
| Thursday | 61°F | Chance Rain Showers | 7 mph NE | 30% |
| Thursday Night | 40°F | Chance Rain Showers | 7 mph NE | 33% |
| Friday | 62°F | Chance Rain Showers | 8 mph N | 31% |
| Friday Night | 41°F | Chance Rain Showers | 9 mph N | 31% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Williamstown, NY
Last spring frost
May 10
First fall frost
Oct 4
Growing season
147 days
Hardiness zone
5b
Explore more for Williamstown, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, North Adams Harriman Ap, Ma (8.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.